Peninsular Bighorn Sheep (Ovis canadensis) We announced on February 1 the designation of 844,897 acres (341,929 ha) in San Diego, Imperial, and Riverside counties, California, as critical habitat for the endangered Peninsular Ranges population of bighorn sheep.

Agencies are planning ways to protect a Peninsular bighorn sheep herd native to the Santa Rosa and San Jacinto mountains that has dwindled to 26 adults and is listed on the federal endangered species list.